numbat alternatives
Curated alternatives to numbat — and why you'd switch.
Adrian
Runtime security for AI agents: watches actions AND reasoning traces to catch prompt injection, tool poisoning and out-of-remit behavior — blocking before the action lands. SDKs + Claude Code plugin.
Why switchBoth do runtime security for agents, with opposite epistemologies. Adrian reads the reasoning trace to catch injection semantically; numbat is deterministic — CEL rules over a normalized endpoint event model, emitting versioned NDJSON and case bundles built for an incident responder.
Full comparison →Guardrails
NVIDIA's programmable guardrails for LLM apps: input, output, dialog and retrieval rails defined in Colang, wrapping any model or LangChain runnable.
Why switchTwo places to put the control. NeMo Guardrails runs inside the app as programmable input, output, dialog and retrieval rails you author per application; numbat runs outside it on the host, so it also sees the agents nobody wired guardrails into.
Full comparison →